Viterbo to Niscemi trains might be a good value for money solution: travelling in Italy by train is often rather cheap and faster than taking a bus indeed Trains leave from Viterbo Porta Fiorentina and arrive at Niscemi every about 6 hours on average. If travelling with Trenitalia, you need to know the Viterbo to Niscemi train schedule: the first train leaves at 18:32, while the last ride is at 18:32. A Viterbo to Niscemi train cost about 104.95 €. But how long is the train ride from Viterbo to Niscemi? Your journey takes about 22 hours on average.